/**
 * @param {number[][]} points
 * @return {boolean}
 */
export var isBoomerang = function (points) {
  const v1 = [points[1][0] - points[0][0], points[1][1] - points[0][1]]
  const v2 = [points[2][0] - points[1][0], points[2][1] - points[1][1]]
  return v1[0] * v2[1] - v1[1] * v2[0] !== 0
}
